نتایج جستجو برای: shunt capacitive switch
تعداد نتایج: 81293 فیلتر نتایج به سال:
A Pulsed Power System is characterized by its energy storage system, the energy can be released in the form of a high power pulse to the load, by means of a switching device. The energy storage is usually either of an inductive or a capacitive nature. The limiting device in a Pulsed Power System is often the switch, which limits the pulse peak power and the repetition rate. The conventional app...
The introduction of inductive storage/opening switCh pulse forming networks as an operational reality in the llUllti-megajoule, sub-microsecond range, makes possible the design and operation of very large high power systems at modest cost.l• 2 The operational simplicity and economy of the pulse shortening system shifts the emphasis from opening switches to that of finding suitably simple, highl...
In this paper, design and optimization of a folded beam for a shunt capacitive MEMS accelerometer is presented together with a comparison of important parameters to five beams with different geometries in range of 20g -100g for crash detection. The structure contains a proof mass which is suspended over fixed rigid pull-down electrode to provide capacitance measurement. Powerful soft wares (COV...
Shunt capacitive compensation is one of the techniques used to improve the voltage profile of the system and reduce active power loss. In this paper Index Vector method is implemented for optimal capacitor placement on three phase unbalanced radial distribution system. Mutual inductance between the phases is taken into consideration for obtaining load flow solution of unbalanced distribution sy...
This paper examines the reliability of RF MEMS switches when operational temperatures in the range -60C to 100C are envisioned. The basic operation of a capacitive MEMS switch is described and two tools to examine device reliability, modeling and on-chip experimentation, are discussed for the case of capacitive MEMS switches. 1-D, 2-D and 3-D models are presented with emphasis on 3-D coupled-fi...
Temperature acceleration of dielectriccharging effects in state-of-the-art RF MEMS capacitive switches was characterized and modeled. From the measured charging and discharging transient currents across the switching dielectric, densities and time constants of traps in the dielectric were extracted under different temperatures. It was found that, while charging and discharging time constants ar...
This paper presents a novel encoding technique to minimize the switch activities on the highly capacitive memory address bus so as to reduce power dissipation of bus. This technique is based on the temporal locality and spatial locality of instruction address. The experimental results based on an instruction set simulator and SPEC2000 benchmarks show that the presented encoding technique can re...
Ventriculoperitoneal (VP) shunt is one of the most common pediatric neurosurgical procedures. It has various complications that may have serious consequences such as shunt dysfunction, and unusual migration. Although, migration of shunt catheter to bladder, heart, umbilicus, rectum, pulmonary artery, and stomach has been reported, migration to vagina is a rare one.In this report we present a 16...
A sensor was tested subdural and in vitro, simulating a supine infant with a ventricular-peritoneal shunt and controlled occlusions. The variable MEMS capacitive device is able to detect and forecast blockages, similar to early detection procedures in cancer patients. For example, with gradual occlusion development over a year, the method forecasts a danger over one month ahead of blockage. The...
In this paper the control strategies of svc are described.SVC is used to stabilize the voltage profile in a grid system.In the designing of SVC there is a combination of three TSC’s and one TCR.The SVC consists of a group of shunt connected capacitor banks and inductors with fast speed of response afforded by thyristor switching. The SVC provides the required amount of reactive power compensati...
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